The optical and physical properties of atmospheric aerosols over the Indian Antarctic stations during southern hemispheric summer of the International Polar Year 2007–2008
The properties of background aerosols and their dependence on meteorological, geographical and human influence are examined using measured spectral aerosol optical depth (AOD), total mass concentration ( M T ) and derived number size distribution (NSD) over two distinct coastal locations of Antarcti...
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ftdoajarticles:oai:doaj.org/article:e7c18c27412e4d75b834a98090dc99cc 2023-05-15T13:42:04+02:00 The optical and physical properties of atmospheric aerosols over the Indian Antarctic stations during southern hemispheric summer of the International Polar Year 2007–2008 J. P. Chaubey K. Krishna Moorthy S. Suresh Babu V. S. Nair 2011-01-01T00:00:00Z https://doi.org/10.5194/angeo-29-109-2011 https://doaj.org/article/e7c18c27412e4d75b834a98090dc99cc EN eng Copernicus Publications https://www.ann-geophys.net/29/109/2011/angeo-29-109-2011.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-29-109-2011 0992-7689 1432-0576 https://doaj.org/article/e7c18c27412e4d75b834a98090dc99cc Annales Geophysicae, Vol 29, Pp 109-121 (2011) Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 article 2011 ftdoajarticles https://doi.org/10.5194/angeo-29-109-2011 2022-12-31T13:11:32Z The properties of background aerosols and their dependence on meteorological, geographical and human influence are examined using measured spectral aerosol optical depth (AOD), total mass concentration ( M T ) and derived number size distribution (NSD) over two distinct coastal locations of Antarctica; Maitri (70° S, 12° E, 123 m m.s.l.) and Larsemann Hills (LH; 69° S, 77° E, 48 m m.s.l.) during southern hemispheric summer of 2007–2008 as a part of the 27th Indian Scientific Expedition to Antarctica (ISEA) during International Polar Year (IPY). Our investigations showed comparable values for the mean columnar AOD at 500 nm over Maitri (0.034±0.005) and LH (0.032±0.006) indicating good spatial homogeneity in the columnar aerosol properties over the coastal Antarctica. Estimation of Angstrom exponent α showed accumulation mode dominance at Maitri (α~1.2±0.3) and coarse mode dominance at LH (0.7±0.2). On the other hand, mass concentration ( M T ) of ambient aerosols showed relatively high values (≈8.25±2.87 μg m −3 ) at Maitri in comparison to LH (6.03±1.33 μg m −3 ). Article in Journal/Newspaper Antarc* Antarctic Antarctica International Polar Year IPY Directory of Open Access Journals: DOAJ Articles Antarctic Indian Larsemann Hills ENVELOPE(76.217,76.217,-69.400,-69.400) Maitri ENVELOPE(11.733,11.733,-70.764,-70.764) Annales Geophysicae 29 1 109 121 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
spellingShingle |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 J. P. Chaubey K. Krishna Moorthy S. Suresh Babu V. S. Nair The optical and physical properties of atmospheric aerosols over the Indian Antarctic stations during southern hemispheric summer of the International Polar Year 2007–2008 |
topic_facet |
Science Q Physics QC1-999 Geophysics. Cosmic physics QC801-809 |
description |
The properties of background aerosols and their dependence on meteorological, geographical and human influence are examined using measured spectral aerosol optical depth (AOD), total mass concentration ( M T ) and derived number size distribution (NSD) over two distinct coastal locations of Antarctica; Maitri (70° S, 12° E, 123 m m.s.l.) and Larsemann Hills (LH; 69° S, 77° E, 48 m m.s.l.) during southern hemispheric summer of 2007–2008 as a part of the 27th Indian Scientific Expedition to Antarctica (ISEA) during International Polar Year (IPY). Our investigations showed comparable values for the mean columnar AOD at 500 nm over Maitri (0.034±0.005) and LH (0.032±0.006) indicating good spatial homogeneity in the columnar aerosol properties over the coastal Antarctica. Estimation of Angstrom exponent α showed accumulation mode dominance at Maitri (α~1.2±0.3) and coarse mode dominance at LH (0.7±0.2). On the other hand, mass concentration ( M T ) of ambient aerosols showed relatively high values (≈8.25±2.87 μg m −3 ) at Maitri in comparison to LH (6.03±1.33 μg m −3 ). |
format |
Article in Journal/Newspaper |
author |
J. P. Chaubey K. Krishna Moorthy S. Suresh Babu V. S. Nair |
author_facet |
J. P. Chaubey K. Krishna Moorthy S. Suresh Babu V. S. Nair |
author_sort |
J. P. Chaubey |
title |
The optical and physical properties of atmospheric aerosols over the Indian Antarctic stations during southern hemispheric summer of the International Polar Year 2007–2008 |
title_short |
The optical and physical properties of atmospheric aerosols over the Indian Antarctic stations during southern hemispheric summer of the International Polar Year 2007–2008 |
title_full |
The optical and physical properties of atmospheric aerosols over the Indian Antarctic stations during southern hemispheric summer of the International Polar Year 2007–2008 |
title_fullStr |
The optical and physical properties of atmospheric aerosols over the Indian Antarctic stations during southern hemispheric summer of the International Polar Year 2007–2008 |
title_full_unstemmed |
The optical and physical properties of atmospheric aerosols over the Indian Antarctic stations during southern hemispheric summer of the International Polar Year 2007–2008 |
title_sort |
optical and physical properties of atmospheric aerosols over the indian antarctic stations during southern hemispheric summer of the international polar year 2007–2008 |
publisher |
Copernicus Publications |
publishDate |
2011 |
url |
https://doi.org/10.5194/angeo-29-109-2011 https://doaj.org/article/e7c18c27412e4d75b834a98090dc99cc |
long_lat |
ENVELOPE(76.217,76.217,-69.400,-69.400) ENVELOPE(11.733,11.733,-70.764,-70.764) |
geographic |
Antarctic Indian Larsemann Hills Maitri |
geographic_facet |
Antarctic Indian Larsemann Hills Maitri |
genre |
Antarc* Antarctic Antarctica International Polar Year IPY |
genre_facet |
Antarc* Antarctic Antarctica International Polar Year IPY |
op_source |
Annales Geophysicae, Vol 29, Pp 109-121 (2011) |
op_relation |
https://www.ann-geophys.net/29/109/2011/angeo-29-109-2011.pdf https://doaj.org/toc/0992-7689 https://doaj.org/toc/1432-0576 doi:10.5194/angeo-29-109-2011 0992-7689 1432-0576 https://doaj.org/article/e7c18c27412e4d75b834a98090dc99cc |
op_doi |
https://doi.org/10.5194/angeo-29-109-2011 |
container_title |
Annales Geophysicae |
container_volume |
29 |
container_issue |
1 |
container_start_page |
109 |
op_container_end_page |
121 |
_version_ |
1766162231385391104 |